A million reasons to go to work, even if you're retired

Forty-two years ago, train mechanic Liu Jinghui committed himself to doing 1 million good deeds for passengers at Changsha Railway Station, Hunan province.

Today, the 74-year-old retiree known to many as Grandpa Liu, admits he is not even halfway toward his goal. But he has no intention of giving up on his quest.

He draws inspiration from Lei Feng, a dedicated soldier who became a role model after his death in 1962 when Chairman Mao Zedong called on all people to learn from him. "I will be here for every passenger until I can't walk," Liu said.